For the past year, my 2010 Hyundai Tucson has intermittently (1-2 times a month) had "hesitation" problems where pressing the accelerator doesn't increase the RPMs - usually within 2 minutes of starting the engine cold. On 3 occasions though, the engine has died and merely wouldn't restart - only to restart several hours later or the next day as if nothing was ever wrong. During this time though, I can spray carb cleaner into the intake, and it fires up while the carb cleaner is present only to die again a few seconds later.
I've replaced the fuel filter, fuel pump, throttle position sensor, mass air flow sensor, and engine pressure regulator already. I've also taken apart the injection system, cleaned it, and put it back together again. It is still happening.
My next best guess is the fuel injectors, but I'd love some other opinions or thoughts about what I could/should check before spending all the money on brand new injectors. Would appreciate any ideas you can provide!